REMEHA Avanta 18v Installation And Service Manual
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REMEHA Avanta 18v Installation And Service Manual

Wall-hung high-efficiency condensing boiler for open vented systems
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Installation and service manual
Remeha Avanta 18v
1
• Wall hung high-efficiency
condensing boiler
for open vented systems
• Output 19 kW

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Summary of Contents for REMEHA Avanta 18v

  • Page 1 Installation and service manual Remeha Avanta 18v • Wall hung high-efficiency condensing boiler for open vented systems • Output 19 kW...

  • Page 2: Table Of Contents

    2 INSTALLATION 2.1 Scope of delivery 2.2 Mounting the boiler 2.2.1 Clearance requirements 2.2.2 Dimensions and connection points. 2.2.3 Mounting the Remeha Avanta 18v 2.3 Water-side connections 2.3.1 Water flow 2.3.2 System Pump 2.3.3 Pressure loss of the boiler 2.3.4 Open-Vented System 2.3.5 Sealed systems...
  • Page 3 4.4.2 Deleting errors 5 SERVICE PARTS 5.1 General 6 EC DECLARATION 7 REGULATIONS 7.1 EC regulations 7.2 Remeha factory test 7.3 Additional guidelines 8 TECHNICAL SPECIFICATIONS AND WORKING PRINCIPLE 8.1 Technical data 8.2 The boiler components 8.3 Working principle 8.3.1 Regulating 8.3.2 Advanced boiler control (‘abc...

  • Page 4: Introduction

    Remeha Avanta 18v INTRODUCTION The Remeha Avanta 18v is a wall mounted high-efficiency fully condensing central heating boiler, for open vented systems These technical instructions contain useful and important infor- mation for the correct installation, operation and maintenance of the Remeha Avanta 18v boiler.

  • Page 5: Safety

    1.3 Safety during installation, inspection and maintenance Under the Gas Safety (Installation & Use) Regulations 1998, the Remeha Avanta 18v, in common with all gas appliances, must be installed by a competent person in accordance with that regulation. Statutory regulations, in any country, cannot be overridden by any of the notes or instructions from the manufacturer.
  • Page 6 Remeha Avanta 18v For any issues or circumstances not addressed within these instructions, please call our Customer Care Department. Remeha Avanta 18v - PIN: 0063BQ3009 Gas Council numbers: Remeha Avanta 18v: 41-288-06 Classification type for evacuation of the combustion products;...

  • Page 7: Installation

    Assembly Instructions supplied with these accessories. 2.2 Mounting the boiler Packed in the box with the Remeha Avanta 18v box is this Installation and Service manual. Read instructions and remarks carefully. This section includes the guidelines and...

  • Page 8: Dimensions And Connection Points

     Condensate drain connection ¾” (standard overflow pipe size)  • Based on the guidelines and the required installation space, determine where to mount the Remeha Avanta 18v. • In determining the boiler position, consider carefully the flue outlet position and any pluming consequences.

  • Page 9: Mounting The Remeha Avanta 18V

    2.2.3 Mounting the Remeha Avanta 18v • Remove template from the box. • Using the template determine and mark the position of the mounting bracket and flue outlet. • Drill the (Ø 8 mm) holes. • Fit the (Ø 8 mm) plugs.

  • Page 10: Pressure Loss Of The Boiler

    2.3.5 Sealed systems T max. 20 59970.LT.GB.W7H.003 If the Avanta 18v is installed on a sealed system, an appro- 59970LTGBW7H003a priately sized expansion vessel and a safety valve MUST be installed close to the inlet side of the pump. A mains filling Min.

  • Page 11: Water Treatment

    2.3.7 Water treatment If used correctly water treatment can improve the boilers efficiency and increase the anticipated life expectancy of the boiler. For further information a special document “Quality requirements CH water” is available from Broag. As most systems contain a variety of metals, it is considered good practice to provide some form of water treatment in order to prevent or reduce the following: •...

  • Page 12: Safety Valve Discharge

    Remeha Avanta 18v 2.3.8 Safety valve discharge A pressure relief safety valve is not needed for Open-Vented systems. 2.3.9 Draining Provision Drain points must be provided at all the low points of the system to ensure that the entire system can be completely drained.

  • Page 13: Connecting Condensate Drain

    Remember to consider the consumption of all household appliances. 2.4.2 Adjusting boiler to other gas-type The Avanta 18v boiler is suitable for both natural gas and pro- pane firing. The boiler is supplied as standard set for natural gas (H),...

  • Page 14: Connecting The Gas Supply

    2 m above the ground, balcony, or flat roof where access by persons is possible a suitable guard must be employed.  The boiler will produce a water vapour plume during normal operation. Positions for the Remeha Avanta 18v are shown in the figure and table 01.
  • Page 15 600 mm No flue must penetrate area within dotted lines 600 mm round roof light 2000 mm LT.AL.W7H.000.020 LTALW7H000020a Dimensions Terminal location Minimum distance (in mm) to terminal (room sealed) Directly below an opening, air brick, opening window, etc. Above an opening, air brick, opening window, etc. Horizontally to an opening, air brick, opening window, etc.

  • Page 16: Room Sealed Flue

    Remeha Avanta 18v 2.5.2 Room sealed flue See table 02 for the maximum pipe length of flue ducts and air supply pipes for this ‘room sealed’ application. It is not necessary to provide combustion air to the room or internal space in which the boiler is installed.

  • Page 17: Electrical Connection

    230 V supply cable connection. 59970LTGBW7H011 59970LGBW7H011a 2.6.1 The control unit The Remeha Avanta 18v has an electronic regulation and con- trol unit with an integrated ionisation flame detector. The heart of the boiler control unit is a microprocessor, the ‘abc , which ®’...

  • Page 18: Connecting External Controls

    Remeha Avanta 18v The output of the Remeha Avanta 18v can be controlled in the following ways: On/off control – volt free switching - The boilers internal control will modulate the output to achieve the flow tempera- ture set point of the boiler. This contact is on the X9 terminal strip (low voltage only).

  • Page 19: Connecting An On/Off Control - Room Temperature (Volt Free Switching)

    LT.AL.W7H.000.025 LTALW7H000025g 2.7.1 Connecting an on/off control – room temperature (volt free switching) The Remeha Avanta 18v can be connected to a 2-wire on/off Terminal thermostat, such as the Remeha Celcia 10. Block X9 Mount the thermostat in a reference room (usually the living room).

  • Page 20: Connecting A Time Control Using An External 230 V Clock

    X2 terminal strip and a Celcia 15 connected to connectors 7 and 8 of X9 terminal strip (remove existing link), the Remeha Avanta 18v will provide room com- pensated heating and time control over CH and DHW.

  • Page 21: Connecting A Modulating Control - Room Or Outside Compensation

    ® Terminal enables our modulating range of OpenTherm room controls ® Block X9 (e.g. the Remeha Celcia 15 or 20) to be connected without any further modifications. • Mount the control in a reference room (usually the living room). •...

  • Page 22: Connecting The Dhw Sensor/Thermostat

    Remeha Avanta 18v Terminal 2.7.6 Connecting the DHW sensor/thermostat Block X9 • If an external DHW calorifier is being used with the Avanta 18v system boiler a DHW control sensor or volt-free ther- mostat can be connected to connectors 3 and 4 of the X9...

  • Page 23: Connecting An External Interlock

    2.7.9 Connecting an external interlock The Remeha Avanta 18v is supplied with an external interlock function. A volt free switching device (i.e. external gas pres- sure switch, safety thermostat for under floor heating) can be...

  • Page 24: Connecting A Pc/Pda

    Remeha Avanta 18v 2.7.11 Connecting a PC/PDA Using the optional Recom interface package a PC or PDA can be connected to the X10 “telephone connector”. Using the Recom PDA service software you can load, change and down- load various boiler settings and readings. See the user instruc- tions supplied with the software/hardware.

  • Page 25: Wiring Diagram

    2.9 Wiring diagram Power supply 230V, 50Hz GN/YW GN/YW 4 5 1 1 2 3 4 5 1 2 3 4 1 2 3 4 1 2 3 1 2 3 1 2 3 4 1 2 3 4 5 6 7 8 1 10 COMM.

  • Page 26: Commissioning

    Remeha Avanta 18v 2.10 Commissioning 2.10.1 Control Panel The control panel of the Remeha Avanta 18v has 4 function keys and a LED display. The function keys are used to read or change the settings and temperatures. 1 = display...
  • Page 27 1. Isolating the power supply and opening the front cover 230 V • Switch off the boiler at the fused spur and remove the fuse; • Remove the front panel - release the two screws at the bot- tom of the front panel, pull the bottom of the panel towards you from the centre, making sure that the plastic catch is released from the central display.
  • Page 28 Remeha Avanta 18v • Open the boiler gas valve and check the static pressure to the boiler at the measurement point (C) on the gas block.  • The boiler has been factory tested for natural gas at 20 mbar.
  • Page 29 59970LTGBW7H016a 4. Checking/setting the gas/air ratio at full load The Avanta 18v boilers are suitable for both natural gas and propane firing. The boilers are supplied as standard set for natural gas (H), therefore the following procedure must be car-...
  • Page 30 Remeha Avanta 18v • Unscrew the flue gas sampling cap and connect the flue gas analyser. • Set boiler to full load: Press the [enter]- key, keep it pressed and also press the [+]-key until h3 appears in the display; full load has been set.
  • Page 31 59970LTGBW7H019 59970LTGBW7H019a  The Remeha Avanta 18v is delivered pre-tested and operating parameters set up with standard factory settings to suit the most common systems. These setting can be adjusted to suit specific site conditions but must not be changed without...

  • Page 32: Normal Start-Up Procedure

    Remeha Avanta 18v 7. Instructing the user • It is the responsibility of the installer as part of the com- missioning procedure to instruct the user in the day to day operation of the boiler and controls fitted to the system and to hand over the completed Boiler Log Book and appropriate documentation.

  • Page 33: Read Out Settings

     After any error é1, é2, é7, é10 or é13 ; the 3 minute venting cycle will run first before starting the boiler. • Checking CH function; - Ensure the time control is in the CH on position - Set the room thermostat on a high demanding temperature and, the display shows [1 ;...

  • Page 34: Adjust The Boiler According To The System

    The operating parameters of the Remeha Avanta 18v have been factory set to suit most systems. However it is possi- ble to adjust some of the parameters to enable the Remeha Avanta 18v to operate more efficiently to match specific system designs and site conditions.
  • Page 35 Maximum fan speed 10 – 70 x 100 rpm CH (natural gas) Maximum fan speed 10 – 70 x 100 rpm CH (propane) Maximum fan speed Do not change DHW (natural gas) Maximum fan speed Do not change DHW (propane) Minimum fan speed Do not change (natural gas)
  • Page 36 Remeha Avanta 18v The parameters can be changed from the stand-by status as follows: • Press the [enter]-key and briefly the [reset]- key until codes c and 0 appear alternately in the display. • Press the [+]-key until access code 12 is displayed.

  • Page 37: Changing The Maximum Output (Hi) For Ch Operation

    • Press the [enter]-key until p17 appears (codes p [ and 17 are displayed alternately); • Press the [+] or [-]-key to change this value for Avanta 18v, for example to 35 (3500 rpm corresponds with 18kW). • Press [enter]-key to confirm the value.

  • Page 38: Restore Factory Settings

    Remeha Avanta 18v 2.10.10 Restore factory settings The factory settings can be restored in the service level as fol- lows: 1. After parameter p31 has shown, press the [+]-key; d f and xx appear alternately; 2. Press -key; xx appears;...

  • Page 39: Inspection And Maintenance

    Engineer with the relevant training and certification (i.e. CORGI - ACS - IEE registrations etc). 3.1 Inspection The annual inspection of the Remeha Avanta 18v can be lim- ited to the following checks: - check the flue pipes and air supply pipes for leaks, see par.

  • Page 40: Checking The Condensate Siphon

    Remeha Avanta 18v 3.1.2 Checking the condensate siphon • Check the condensate siphon. Remove any dirt residues and refill with clean water to the mark. 59970LTGBW7H0234 59970LTGBW7H024a 3.1.3 Checking the ignition electrode • Check the ionisation /ignition electrode for: - deposits (remove any white deposits with abrasive cloth);...

  • Page 41: Checking The Combustion

    3.1.4 Checking the combustion • Measure the O percentage and the flue gas tempera- ture at the flue gas sample point. Do this as follows: - heat the water temperature in the boiler to approx. 70°C; - unscrew the top of the flue gas point of measurement; - measure the O percentage and compare this to the check values in table 09.

  • Page 42: Maintenance

    Remeha Avanta 18v 3.2 Maintenance To conduct maintenance:  Ensure that a service gasket set and new ignition/ionisation electrode is available before carrying out this procedure.  • Isolate power supply at the fused spur before carrying out any work on the boiler.
  • Page 43 2. Maintenance of the ignition/ionisation electrode • Disconnect the earth wire from the electrode mounting plate. • Release the two screws on the electrode and remove the assembly. • Inspect, clean re-gap or replace the electrode, see par 3.1.3. • Do not over tighten the screws when replacing.
  • Page 44 Remeha Avanta 18v 4. Maintenance to the burner • Carefully clean the burner with pressured air (do not keep the nozzle to close to the surface). • Visual inspection of the burner for any damages or cracks on the surface. If you see any damages, than replace the burner.
  • Page 45 6. Re-Assembling the boiler and checking the combustion • Re-assemble all the components in reverse order.  • Remember to connect the fan plug again before it is completely home on the front of the heat exchanger. • Check that the packing between the front plate and the heat exchanger has been fitted correctly.

  • Page 46: Errors

    Remeha Avanta 18v ERRORS 4.1 General The Remeha Avanta 18v has an advanced control unit. The heart of this control unit is a microprocessor, the abc -con- ® trol which both controls and protects the boiler. If an error is detected anywhere in the boiler, it will lock out and an error code will appear in the display.
  • Page 47 Insufficient water. Check the water level and check for leaks. Check that the pump is working; turn the spindle with a screw- No through flow. driver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty. Too much air in the system.
  • Page 48 Remeha Avanta 18v Fan is not working Check: • Fan function; • Fan wiring and connection. Fan fault Fan does not stop Check: é8 • Fan function; • Fan wiring and connection; • Excess chimney draught. Insufficient water. Check the water level and check for leaks.

  • Page 49: Control Stop Or Lock-Out

    The lock-out will disappear once the cause has been removed! 4.4 Error code memory The Remeha Avanta 18v control unit has an error code mem- ory, in which the last 16 errors are stored. In addition to the error code (é and a number xx).

  • Page 50: Error Read Outs

    Remeha Avanta 18v 4.4.1 Error read outs • Press the [enter]-key and keep it pressed; • Press the [reset]-key until codes c and 0 appear alter- nately in the display; • Enter the special access code 88 with the [+] or [-]- key;...

  • Page 51: Service Parts

    5.1 General If, following the annual inspection or maintenance any part of the boiler is found to need replacing, use Remeha spare parts only or spare parts and materials recommended by Remeha. If the component to be replaced is covered by the Remeha...
  • Page 52 Remeha Avanta 18v 2030 2007 2008 2009 1006 1001 2001 1003 2022 1004 2010 2006 2002 2026 4008 4007 2012 4009 1005 1007 2003 4005 2013 1002 4001 2015 4010 4006 2018 2005 4002 2011 4004 1005 1007 2017 3001...
  • Page 53 Return form example * These details can be found on the boiler type plate; the type plate is stuck to the bottom of the boiler. fig. 59 Exploded view Remeha Avanta 18v 59970EVGBW7H010 Break down parts kit Part No Description...

  • Page 54: Ec Declaration

    : Remeha B.V. Address : Kanaal Zuid 110 Town, Country : Postbus 32, NL-7300 AA Apeldoorn - hereby declares that the appliance(s): Remeha Avanta 18v comply / complies with the specifications of the following EEC directives: EEG Directive: 90/396/EEG applied standards:...

  • Page 55: Regulations

    - 97/23/EEC Pressure equipment directive (art. 3, sub. 3) Classification type for evacuation of the combustion products; according EN 483 7.2 Remeha factory test Before it leaves the factory, each Remeha Avanta 18v boiler is optimally adjusted and tested for: - electrical safety; - CO2- adjustment;...

  • Page 56: Technical Specifications And Working Principle

    Remeha Avanta 18v TECHNICAL SPECIFICATIONS AND WORKING PRINCIPLE 8.1 Technical data Appliance type Remeha Avanta 18v General Boiler control modulating or on/off Nominal output Pn (80/60°C, CH) 17.6 Nominal output Pn (50/30°C, CH) 19.0 Nominal input Qn 5.8 - 18.0 Nominal input Qnw 18.0...

  • Page 57: The Boiler Components

    11. Control unit 8.3 Working principle The Remeha Avanta 18v casing serves as a sealed air box, with air drawn in by the fan. On the outlet side of the fan is a venturi, into which a measured quantity of gas is injected based on the volume of air available.

  • Page 58: Advanced Boiler Control ('Abc ® '-Control)

    ’- control prevents unnecessary additional call outs. ® 8.3.3 Regulating the water temperature The Remeha Avanta 18v is fitted with an electronic tempera- ture regulator with flow and return temperature sensors. The flow temperature can be set to between 20 and 75°C, see 2.10.8 (factory setting 75°C).

  • Page 59: Efficiency Data And Gas Efficiency Labels

    EFFICIENCY DATA AND GAS EFFICIENCY LABELS 9.1 Annual efficiency 108.7 % in relation to Hi at a load of 30% and a return tem- perature of 30°C. 9.2 Water-side efficiency 98 % in relation to Hi at full load and an average water tem- perature of 70°C (80/60°C).
  • Page 60 LTALW7H000072a LTALW7H000070a LTALW7H000068a Broag Ltd. Remeha House © Copyright Molly Millars Lane All technical and technological information contained in these technical instructions, as RG41 2QP WOKINGHAM, Berks. well as any drawings and technical descriptions furnisched by us remain our property and may not be multiplied without our prior consent in writing.
  • Page 61 Suggested Schematics with Control and Power Wiring details Outside Sensor Mount in a sheltered position on North facing wall Local temp control Under floor HTG 1020 230v Supply Local temp Mains cold water control Condensate 22mm Gas 22mm Under floor HTG High Temp Flow 22mm...
  • Page 62 Weather Compensation Control (Direct modulating using ‘OpenTherm®’) System boiler - Internal time clock with simple weather compensated Heating and priority DHW Combi boiler - Internal time clock with simple weather compensated Heating and constant DHW AVANTA 18v “Open Vented” Options (System only) Typical “Y”...
  • Page 63 Mechanical time/ analogue weather or room compensator ===================== Controls available from Broag as optional extras • S62432 Internally mounted two channel digital time clock kit (not for the Avanta 18v) • S62432c Internally mounted single channel digital time clock (for the Combi series only) •...
  • Page 64 AVANTA PLUS System Option 1 Typical “Y” plan Heating and DHW using 230v controls 2 Channel Time clock Room Stat Wiring Centre 230v Supply 22mm Return Condensate 22mm Gas 22mm Three way Mid position 'A' HTG valve - HTG and/or Flow high output Calorifier 'AB'...
  • Page 65 AVANTA PLUS System Option 2 Typical “W” plan Heating and Priority DHW using 230v controls 2 Channel Time clock Room Stat Wiring Centre 230v Supply 22mm Return Condensate 22mm Gas 22mm Three way Diverting 'A' HTG valve - HTG or DHW Flow high output Calorifier 'AB'...
  • Page 66 AVANTA PLUS System Option 3 Typical “S” plan Heating and DHW using 230v controls 2 Channel Time clock Room Stat Wiring Centre 230v Supply 22mm HTG Zone Valve Return Condensate c/w end switches 22mm Gas 22mm Flow DHW Zone Valve Cylinder Stat c/w end switches AVS0001...
  • Page 67 AVANTA PLUS System Option 4 Internal time clock - Heating and Priority DHW using Celcia 10 and 3 way diverting valve kit Room thermostat (Celcia 10) Mount in a reference room 1.5M above floor away from any heat scource 1020 230v Supply 22mm Return...
  • Page 68 AVANTA PLUS System Option 5 Simple weather compensated Heating with Priority DHW Two channel Outside Sensor time clock Mount in a sheltered position on North facing wall 230v Supply 22mm Return Condensate 22mm Gas 22mm Three way Diverting 'A' HTG Flow valve - HTG or DHW high output Calorifier...
  • Page 69 AVANTA PLUS System Option 6 Simple weather compensated Heating with room thermostat override (230v) and Priority DHW Outside Sensor Mount in a sheltered position on North facing wall Two channel time clock Room thermostat Mount in a reference room 1.5M above floor away from any heat scource 230v Supply 22mm...
  • Page 70 AVANTA PLUS System Option 7 Simple weather compensated Heating with room thermostat override (Celcia 10) and Priority DHW Outside Sensor Mount in a sheltered position on North facing wall Two channel time clock Room thermostat Mount in a reference room 1.5M above floor away from any heat scource 230v Supply...
  • Page 71 AVANTA PLUS System Option 8 Time / Weather compensated Heating with Priority DHW (Celcia 20 - Digital clock) Outside Sensor Mount in a sheltered position Time / Weather on North facing wall compensator (Celcia 20) Mount in a reference room 1.5M above floor away from any heat scource 230v Supply...
  • Page 72 AVANTA PLUS System Option 9 Simple room compensated Heating using the Celcia 15 and Priority DHW Modulating thermostat (Celcia 15) Two channel Mount in a reference room time clock 1.5M above floor away from any heat scource 230v Supply 22mm Return Condensate 22mm Gas...
  • Page 73 AVANTA PLUS System Option 10 Time / Room compensated Heating with Priority DHW (Celcia 20 - Digital clock) Time / Room compensator (Celcia 20) Mount in a reference room 1.5M above floor away from any heat scource 230v Supply 22mm Return Condensate 22mm Gas...
  • Page 74 AVANTA PLUS Combi Option 11 Timed heating with constant DHW using external time clock and room thermostat (230v) Room thermostat (230v) Two channel Mount in a reference room time clock 1.5M above floor away from any heat scource 230v Supply Mains cold water Condensate 22mm Gas...
  • Page 75 AVANTA PLUS Combi Option 12 Timed heating with constant DHW using internal time clock (230v) and room thermostat (Celcia 10) Room thermostat (Celcia 10) Mount in a reference room 1.5M above floor away from any heat scource 1020 230v Supply Mains cold water Condensate 22mm Gas...
  • Page 76 AVANTA PLUS Combi Option 13 External time clock with simple weather compensated Heating and constant DHW Two channel Outside Sensor time clock Mount in a sheltered position on North facing wall 230v Supply Mains cold water Condensate 22mm Gas 22mm Flow 22mm Return...
  • Page 77 AVANTA PLUS Combi Option 14 Internal time clock with simple weather compensated Heating and constant DHW Outside Sensor Mount in a sheltered position on North facing wall 1020 230v Supply Mains cold water Condensate 22mm Gas 22mm Flow 22mm Return AVS0019 Terminal 230v - 3 Amp...
  • Page 78 AVANTA PLUS Combi Option 15 Time / Room compensated Heating using the Celcia 20 (Digital clock) and constant DHW Outside Sensor Mount in a sheltered position on North facing wall Time / Weather compensator (Celcia 20) Mount in a reference room 1.5M above floor away from any heat scource 230v Supply...
  • Page 79 AVANTA PLUS Combi Option 16 External time clock with simple room compensated Heating using the Celcia 15 and constant DHW Modulating thermostat (Celcia 15) Two channel Mount in a reference room time clock 1.5M above floor away from any heat scource 230v Supply Mains cold water Condensate...
  • Page 80 AVANTA PLUS Combi Option 17 Internal time clock with simple room compensated Heating using the Celcia 15 and constant DHW Room compensator (Celcia15) Mount in a reference room 1.5M above floor away from any heat scource 1020 230v Supply Mains cold water Condensate 22mm Gas 22mm...
  • Page 81 AVANTA PLUS Combi Option 18 Time / Room compensated Heating with Priority DHW (Celcia 20 - Digital clock) Time / Weather compensator (Celcia 20) Mount in a reference room 1.5M above floor away from any heat scource 230v Supply Mains cold water Condensate 22mm Gas 22mm...
  • Page 82 AVANTA PLUS System Option 19 System boiler - Internal time clock with simple weather compensated UF Heating and priority DHW Outside Sensor Mount in a sheltered position on North facing wall Local temp control 230v Supply High output Calorifier c/w DHW thermostat or Under floor HTG sensor 1020...
  • Page 83 AVANTA PLUS Combi Option 20 Combi boiler - Internal time clock with simple weather compensated UF Heating and constant DHW Outside Sensor Mount in a sheltered position on North facing wall Local temp control Under floor HTG 1020 230v Supply Local temp Mains cold water control...
  • Page 84 AVANTA 18v System Only - Option 1 Typical “Y” plan Heating and DHW using 230v controls 230v Supply Check valve may 2 Channel be necessary Time clock Wiring Centre DHW thermostat 'B' DHW Three way Mid position 'AB' valve - HTG and/or...
  • Page 85 AVANTA 18v System Only - Option 2 Typical “W” plan Heating and Priority DHW using 230v controls 230v Supply Check valve may 2 Channel be necessary Time clock Wiring Centre DHW thermostat 'B' DHW Three way Diverting 'AB' valve - HTG or DHW...
  • Page 86 AVANTA 18v System Only - Option 3 Typical “S” plan Heating and DHW using 230v controls DHW thermostat 230v Supply Check valve may 2 Channel be necessary Time clock Wiring Centre DHW Zone valve c/w end switches 22mm Flow Room Stat...
  • Page 87 AVANTA 18v System Only Option 4 Simple weather compensated Heating with Priority DHW Outside Sensor Mount in a sheltered position on North facing wall 230v Supply 2 Channel DHW thermostat Time clock 'B' DHW 'AB' Three way Diverting valve - HTG or DHW...
  • Page 88 AVANTA 18v System Only Option 5 Simple weather compensated Heating with 230v room thermostat override and Priority DHW Outside Sensor Room thermostat Mount in a sheltered Mount in a reference room position on North 1.5M above floor away from facing wall...
  • Page 89 AVANTA 18v System Only Option 6 Simple weather compensated Heating with volt free room thermostat override and Priority DHW Outside Sensor Room thermostat (volt free) Mount in a sheltered Mount in a reference room position on North 1.5M above floor away from...
  • Page 92 Wokingham Berkshire RG41 2QP Tel : 0118 978 3434 Fax : 0118 978 6977 e Mail : boilers@broag-remeha.com Web Site : www.avantaplus.com www.uk.remeha.com The schematics in this brochure are for guidance only and do not constitute a design Art No : 113046 The content in this brochure is based on the latest information available at date of publication and may be subject to revisions.

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